Roller fly-screen



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ROLLER FLY-SCREEN.

Speciication of-LettersfPatent- -Piittented lway 111, 1920.

Application filed March 16, 1918. Serial No. 222,875.

To all 'LU/wm #may concer/1i.'

Be it known that I, 'FnANKJosEPH BAU- iins, a citizen of the United States of America, residing at Saginaw, in the county of Saginaw and State of Michigan, "have invented new and useful Improvements in Roller Fly-Screens, of which the following is a specication.

T his invention comprehends generally improvements in that classV of inventions known as window shades and screens, and more particularly 'has reference to a roller ily screen.

lt is the primary aim and object of this invention to provide a device of the above character designed to be removably connected tothe side 'rails and sill 'of awindow casing beneath the lower sash when the latter is in an open position soas to prevent iiies from passing into the .room of a building.

It is an additional object of this invention to provide a ldevice of the above 'character wherein improved cooperative retaining means is mounted onthe screen proper and on the sill of the casing 'for detachably holding the screen to the casing when it is desired to use the screen. n

As a further improvement, this invention embodies the provision of a device of the above character, the construction of which permits of the device being readily and quickly attached to the side of a window casing when it is desired to use the screen or else permits of the quick removal of the attachment when it is desired to completely close the window.

Among the other aims and objects of this invention may be recited the provision of a device of the above character with a view to compactness, and in which the number of parts are few, the construction simple, the cost of production low and the efliciency high.

Other improvements and novel details in the construction and arrangement of the Vvarious parts of the appara-tus will be brought out more in detail in the accompanying drawings forming a part hereof, and wherein is disclosed for the purpose of illustration a convenient and satisfactory embodiment of the invention. It is to be noted in this connection that minor changes in the construction and arrangement of parts may be made without departing from ployed in all of the above described views,

to indicate corresponding parts.y p

Referring now, more particularly, to the accompanying drawings,there is provided a window casing lconsisting of a sill 1 upon which are l.mounted 'opposed stiles 2 while slidably mounted'in the stiles is a lower sash As indicated in the `lrawings, the sash is in a raised position while detachablymounted in the casing immediately beneath the sash-'is the improved roller screen attachment indicated in its entirety bythe numeral 4.

In the present instance, the improved attachment may be said toconsist of a spring roller 5, to which is connected one end of a screen 6, the latter ,being windable about theV roller'while the marginal edges of the screen are folded inwardly to form a substantial pinion, as indicated by the numeral 7. An angle strip 8 is connected to the outer edge of the screen 6 and serves also as a binding, and for an additional purpose that will hereinafter become apparent.

In detachably mounting the attachment in the position as indicated in Fig. 1, opposed trunnions supporting brackets 9 and 10 are employed and are both embedded in opposite points in the inner surfaces of the stiles 2. The bracket 9 is formed with a round aperture 11 for receiving the correspondingly shaped trunnions 12 while the other bracket 10 is formed with a substantial bayonet slot 13 for removably accommodating the other trunnion 14 of the roller 5 which trunnion is preferably rectangular in cross section. The inner surface of the stile upon which the bracket 10 is mounted is formed with a groove 15 which first receives the trunnion 14 and through which groove the said trunnion is passed preparatory to being embedded in the slot 13. In other words, this slot facilitates the application and removal of the trunnion 14; in the slot 13.

With a view toward providing the improved means for detachably fastening the screen to the sill a pair of clasps 16 are provided and are connected to the upper surface of the sill and are designed to be engaged by the angle bar 8 which cooperates with the clasp in assuring of the removable retention of the screen in a closed position. Subsequent to the applying of the screen in the position indicated in Figs. 1 and 2 the sash 3 is lowered to slightly engage the top of the screen so as to assure of the complete closing of the window opening and preventing the entrance of flies or other insects into the room of a building.

In use, assuming that the parts have been assembled in the manner described and as illustrated in the drawings, to remove the screen, it is only necessary to raise the sash 3 to disconnect the angle bar 8 from the clasp 16 whereupon owing to the spring tension of the roller, the screen-will be automatically wound on the roller. As soon as the screen has been wound on the roller, the screen and the roller are grasped while the end near the trunnion 14 is lifted upwardly so that the trunnion can be moved from the slot 13 and the groove 15 and in this manner disconnected from the casing.

It is believed in view of the foregoing description that a further detailed description of the operation of the invention is entirely Y unnecessary. Likewise, it is thought that the advantages of the invention will be readily apparent. n

As many changes could be made in the above construction and Vmany apparently widely different embodiments of this invention could be made without departing from ing claim is intended to cover all the generic and specific features 0f the invention herein described and all statements of the scope of the invention which as a matter of language might besaid to fall therebetween.

Having thus fully described this inveni tion, what is claimed as new and desired tobe secured by Letters-Patent, is:

rlhe combination with a window Vframe having a sill and oppositely disposed upstanding Stiles mounted thereon andwindow guiding beads attached on ther stiles, of a spring actuated roller, a screen windable upon the roller and having one end attached thereto, the screen being formed with binding on its side edges, an angle strip attached to that end of the screen re mote from the roller, brackets mounted on the opposing faces of the window stiles, one of said brackets being formed with a round hole to receive the round trunnion of the spring actuated roller, the other Vof the brackets being' formed with a bayonetl slot communicating with a slot cut in the adj acent guide bead whereby the flat trunnion of the roller may be made to engage the said bracket, the sill being slotted on its upper face in the direction of its length to receive said angle strip, and clasps attached on top of the sill and overhanging the slot therein for engagement with the said angle strip, whereby the screen may be attached in the window frame or detached therefrom inthe simple manner specified.

In'testimony whereof l affix my signature.

FRANK JOSEPH BAUKUS. 

